According to the Gurbani, a Gurmukh (Bhagat, Daas, Jan…) is such person. Being worry-free, there is everlasting Joy in his Heart. Laughter is natural to him.

ਬ੍ਰਹਮ ਗਿਆਨੀ ਕੈ ਘਰਿ ਸਦਾ ਅਨੰਦ ॥: There is everlasting Joy in the Heart of the Brahm Giaanee (sggs 273).

A Brahm Giaanee is LOVE personified.

How does it all become possible for a Brahm Giaanee? The Gurbani tells us that a Brahm Giaanee, for example, is stabilized in Sahaj Avasthaa (Natural State of Being, Giaan Avasthaa…). The world to him is nothing but a show, glittering but ephemeral, etc. He enjoys it as it happens; without attachment. Since he has transcended Maya, he is worry-free, the Whole (Saabat).

Free of the body-consciousness, the Giaaneee rests on his “Jot Saroop” (his Mool, Source, Jot…); he ever remains established in the discerning intellect (Viveka-Budhi) of the Gurbani; he sees the Aatmaan alone in a scavenger and a king, etc.

When the mind is so Pure, or when the “filth” of Maya is gone from the mind, or when the dream has ended, then the one will start laughing, never to lose his sense of humor again. To the contrary, the Gurbani tells us that those afflicted with worry cannot find happiness (Sukh) even in their dreams!

ਸੁਪਨੈ ਸੁਖੁ ਨ ਦੇਖਨੀ ਬਹੁ ਚਿੰਤਾ ਪਰਜਾਲੇ ॥੩॥: Supanai sukhu… (sggs 30).

A Brahm Giaanee is worry-free (“Achint-ਅਚਿੰਤ“). He understands the ridiculousness of this worldly game. To him, this worldly show (Maya) is just a “Tamaasaa” – entertainment, spectacle, show…!

A Brahm Giaanee is a detached observer just as air: Air exists in space, but, since it is not attached to space, it is free from spatial limitations. The mind attached to Maya is tortured by the memory of the past and worries of the future. But the Brahm Giaanee is free from past-memory and future-anticipation.

However, to the contrary, the popular picture of a spiritual or religious person is that he is a serious looking; grim-faced being with a white flowing beard; always busy correcting others; guiding people towards spiritual realization; and that he has little time and less inclination to laugh…

If you see a person claiming himself to be a spiritual or religious who has no sense of humor, you can be certain that he has not come “Home” yet! That is, he is just pretending (Paakhand) to be a spiritual or religious person. But in reality, his mind is very much in love with Maya!

Now try yourself and see what is more beneficial to you — weeping or laughter!

The true spiritual or religious person, in fact, not only laughs but also makes others laugh, possibly at his own expense! Because of his Divine Wisdom, he treats both suffering and joy with indifference. He thinks they are part of life and have to be accepted. This is abiding in the Divine Hukam. In other words, the Gurmukh’s laughing is in Bhagti and his crying is also in Bhagti (i.e., in the Divine Wisdom).